For the Gen5, there's an "AUTO" selection for your headlight. Depending on the light or darkness outside it will automatically switch from daytime running lights to normal night driving lights. My question is, how do I change the sensitivity of the sensor. I know the sensor is located on the dashboard. And then theres a circular hole next to it. Do I lift the cap of that circular hole to adjust the sensitivity? is that where it is?

Today when I was driving to work, it was pouring and the sky was grey, the night time driving light didn't come on, only daytime running lights. I felt it should have came on to increase greater visibilty.

Yes, there's an AUTO selection for the headlight. I'm not sure if it's in US cars as well. We have day time running lights here in Canada.

Any way, the when you select AUTO, it decides when to use the daytime running light and when to use your night time lights based on the amount of light outside. So it's very handy when your driving, for example, on a long trip... as the sun goes down, it detects it and switches the light to night light (regular night time light).

Any way, I want to adjust the sensitivity so it switches to Night time driving lights sooner (or when there's still light out but the sky is grey).

I'm sure there's a way to adjust the sensitivity (was it in the owner's manual that I read if it's too sensitive/insensitive, go to a dealer to have it adjusted?) - I'm sure it's something computerized.. Either that or something similar to turning the seat belt chime off.

Are you not able to manually control the lights on the cars that have automatic lights? I know it might be annoying since the automatic feature is there, but these things don't always work out.

Some US cars have it, some don't. It's not a standard feature.

Yes, you can manually control it. Basically, there are 3 settings:
1. normal night time driving lights, tail lights on.
2. day time running lights - which uses a differnt bulb than the night time driving lights, tail lights are off
3. AUTO - automatically selects correct light, based on the amount of light outside.

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